<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
body {
  font-size: 10px;
}
div {
  width: 100px;
  height: 200px;
  margin: 5px;
  border: 1px solid silver;
  display: inline-block;
  vertical-align: top;
}
p {
  inline-size: 100%;
  margin: 0;
}
span {
  display: inline-block;
  width: 20px;
  height: 20px;
  background: green;
  position: relative;
}
</style>
</head>
<body>
<div> <p><span style="left: 20px;"></span></p> </div>
<div> <p><span style="left: 60px;"></span></p> </div>
<div> <p><span style="top: 40px;"></span></p> </div>
<div> <p><span style="top: 140px;"></span></p> </div>
<div> <p><span style="top: 40px; left: 80px;"></span></p> </div>
<div> <p><span style="top: 140px; left: 80px;"></span></p> </div>
<br>
<div> <p><span style="left: 20px;"></span></p> </div>
<div> <p><span style="left: 60px;"></span></p> </div>
<div> <p><span style="top: 40px;"></span></p> </div>
<div> <p><span style="top: 140px;"></span></p> </div>
<div> <p><span style="top: 40px;"></span></p> </div>
<div> <p><span style="top: 140px;"></span></p> </div>
</body>
</html>
